Question 1

Which of the following consist of all polynomial expressions? (1 mark) [4]

Accepted Answer

$(x^2-4), ( a+b) , (p^3+p^2-p)$

Answer

$(x^2-4), ( ab^3) , (p^3-p)$

Answer

$(x^2), ( a+b) , (p^2+p-1)$

Answer

$(1-q), ( ab+c) , (p^2q)$

Question 2

Which of the following consist of all monomial expressions?  (1 mark) [4]

Accepted Answer

$(ab^3c), 1, (3q)$

Answer

$(ab^3c), (1-w), (3q)$

Answer

$(ad+2), 50, (3q-2)$

Answer

$(ab^3-c), p, (3q)$

Question 3

What is the degree of -10abc? [1 mark] [4]

Accepted Answer

3

Answer

2

Answer

4

Answer

1

Question 4

Simplify $1.2x - 0.7y -0.8x - 0.3y$    [1 mark] [3]

Accepted Answer

$0.4x-y$

Answer

$x-y$

Answer

$x-0.4y$

Answer

$0.4x+y$

Question 5

Add $2a^2-6ab-b^2$ with $-a^2+ab+4b^2$.   [2marks][3]

Accepted Answer

$a^2-5ab+3b^2$

Answer

$a^2+7ab+3b^2$

Answer

$a^2-5ab-3b^2$

Answer

$3a^2-7ab+5b^2$

Question 6

Subtract $a^2-ab-b^2$ from $5a^2-2b^2$.  [2 marks][3]

Accepted Answer

$4a^2+ab-b^2$

Answer

$4a^2-ab-3b^2$

Answer

$4a^2-ab+3b^2$

Answer

$-4a^2-ab+b^2$

Question 7

Given that $\frac{5a+ X}{2} - \frac{2(6a-11b)}{5} = \frac{Y-b}{10}$, find the terms for X and Y.  [2 marks][2]

Accepted Answer

$X=-9b , Y=a$

Answer

$X=6b , Y= -a$

Answer

$X=-7b , Y= a$

Answer

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